Asstgnob to the singer



(No Model.)

P. DIEHL.

SEWING MACHINE SHUTTLE. No. 337,818. Patented Mar. 16, 1886.

N. PETERS, Flwtn-Lilhogmphurwasmn mn, D. c.

PHILIP DIEHL, OF ELIZABETH, NElV JERSEY, ASSTGNOR TO THE SINGER I I MANUFACTURING COMPANY OF NE\V JERSEY.

SEWING-MACHINE SHUTTLE.

SPECIFICATION forming part of Letters Patent No.337,818, dated March 16, 1 886.

Serial No. 179,288. (No model.)

To all whom it may concern:

Be it known that I, PHILIP DIEI-IL, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Sewing-Machine Shuttles, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to that class of sewingmachine shuttles capable of being threaded simply by drawing the thread into slots without passing itth rough holes or eyes,and known in the art as self-threading shuttles.

The object of my invention is to provide a shuttle of this character which may be quickly and easily threaded, and which, while it is comparatively cheap to manufacture, is efficient in operation, and is not liable to break the thread.

My shuttle is of the class known as openended shuttles, in which the bobbin is inserted at the end, andis in operation retained in the shuttle by the rear horn of the shuttle carrier. To the upper side of the shuttle-bod y is attached the tensionspring, provided with two small fingers, the ends of which rest in small recesses in the shuttle-body, the rear end of said spring passing down into the inclined slot, which forms an open passage from the rear end of the shuttle to the usual straight thread-delivery slot in the body of the shuttle. The rear portion of the tension-spring is held down to the shuttle-body by an offset projection at the end thereof, which springs up against the inside of the shuttle-body on the side of the said inclined slot opposite to that on which the main portion of the said spring lies, and the bend in said spring, by being engaged in said slot, holds the rear end of the spring from sidewise movement on the shuttle body.

In the accompanying drawings, Figure 1 is a plan View of my improved shuttle with the tension-springin place, and Fig. 2 is a similar view with the tension-spring removed. Fig. 3 is a detail plan view of the tension-spring, and Fig. 4 is a rear end view of the shuttle and bobbin.

A denotes the shuttle shell or bod y,provided with a straight thread-de1ivery slot, a, communicating with the open rear end of the shuttle-body by an inclined slot, a, one side wall of which is preferably rounded at a B is the tension spring,which is attached at L The pressure of the main portion of the ten sion-spring and of the thread-fingers I) and b against the shuttle-body will have a tendency to lift the rear end of said spring, so that the projection or hook I) will be held up snugly against the inside of the shuttle-body at all times, thus leaving sufficient space between the bend in said spring and the side wall of the slot a, on which the main portion of the tension-springlies,to permitt-he bobbin-thread to be easily drawn into said slot between said bend and wall. The engagement of the downwardly -bent rear end of the tension-spring with the inclined slot a serves to hold said end securely in place, and as the said end extends across said slot partly on the outside and partly on the inside of the shuttle, the thread is effectively prevented from being broken by catching in said slot when the shuttle is in operation in the machine.

In threading the shuttle the thread from the bobbin 0 is first drawn forward into the slot a beneath the tension-spring,over the threadfiuger b, and into the hole at the base of said finger. The thread is then drawn backward over the thread-finger b and into the hole at the base thereof, this latter movement bringing the thread beneath the thread-guard If, and the shuttle is then threaded, as indicated in dotted lines in Fig. 1.

I claim as my i'nvention 1. The combination, with a shuttlebody having an open inclined slot at its rear end,of a tension-spring the rear end of which extends across said slot partly on the outside 3. The combination, with the shuttle-body and partly on the inside of the said shuttle- A, having the slots a and a, of the tensionbody, and rests against the inner wall of the spring B, having the thread-fingers band b, I

latter, substantially as set forth. and the downwardly-bent projection or hook r 5 5 2. The combination, with a shuttle-body bientering the slot a,substantial1y as set forth.

having an open inclined slot at its rear end,of In testimony whereof I afiix my signature a tension-spring attached to said shuttle-body in presence of two witnesses.

at its forward end, and provided with thread- I PHILIP DIEHL. fingers, the rear end of said spring entering Witnesses: 10 said slot and resting against the inner wall of JAMES G. GREENE, v

the shuttle-body. -WM. H. INsLEE. J 

